|Table of Contents|

Physical modeling test on shield tunnel crossing ground fissure with 30°(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2009年04期
Page:
63-68
Research Field:
Publishing date:
2009-08-20

Info

Title:
Physical modeling test on shield tunnel crossing ground fissure with 30°
Author(s):
HU Zhi-ping1; PENG Jian-bing2; HUANG Qiang-bing2; WANG Qi-yao1
1.School of Civil Engineering,Chang’an University,Xi’an 710061,Shaanxi,China;2.School of Geology Engineering and Geomatics,Chang’an University,Xi’an 710054,Shaanxi,China
Keywords:
tunnel engineering;  segment lining;  shield tunnel;  ground fissure
PACS:
U451.5
DOI:
-
Abstract:
In order to study the influence rule and deformation destructive character of shield tunnel segment lining structure cross the ground fissure with 30°, based on the background of Xian metro shield tunnel and the geological environment of Xian ground fissure, the similar constant of segment lining structure modeling is designed according to the similar theory. The parameters of model concrete, model reinforcement bar, model structure country soil, model segment and bolt are designed. Strain measurement of structure reinforcement bar and concrete, measurements of contact soil pressure and peripheral soil, convergence displacement of segment lining and the soil displacement on the top of model can be accomplished in the model test. With the assistance of foundation settlement test plate, the hanging layer of ground fissure relative to lining layer slowly falling is realized by the slowly falling of latching jack. The activity speed and faulted quantity of ground fissure is implemented by the operation speed and distance of jack controlled by the controller. The test result shows that the design can meet the needs of the modeling test to study the deformation destructive character and domain of shield tunnel segment lining structure cross the ground fissure with 30°, and the test target can be realized. The foundation settlement test plate is suitable to simulate the activity of ground fissure. 1 tab, 11 figs, 10 refs.

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Last Update: 2009-08-20